syscalls: use >= 3.10 support for eventfds in os module

1 files changed, 6 insertions, 10 deletions

diff --git a/linuxnamespaces/syscalls.py b/linuxnamespaces/syscalls.py
index 11800c6..9d2b1ba 100644
--- a/linuxnamespaces/syscalls.py
+++ b/linuxnamespaces/syscalls.py
@@ -73,9 +73,9 @@ class EventFDFlags(enum.IntFlag):
     """This value may be supplied as flags to eventfd(2)."""
 
     NONE =            0
-    CLOEXEC = 0o2000000
-    NONBLOCK =   0o4000
-    SEMAPHORE =     0o1
+    CLOEXEC = os.EFD_CLOEXEC
+    NONBLOCK = os.EFD_NONBLOCK
+    SEMAPHORE = os.EFD_SEMAPHORE
     ALL_FLAGS = CLOEXEC | NONBLOCK | SEMAPHORE
 
 
@@ -438,15 +438,13 @@ class EventFD:
     ) -> None:
         if flags & ~EventFDFlags.ALL_FLAGS:
             raise ValueError("invalid flags for eventfd")
-        self.fd = call_libc("eventfd", initval, int(flags))
+        self.fd = os.eventfd(initval, int(flags))
 
     def read(self) -> int:
         """Decrease the value of the eventfd using eventfd_read."""
         if self.fd < 0:
             raise ValueError("attempt to read from closed eventfd")
-        cvalue = ctypes.c_ulonglong()
-        call_libc("eventfd_read", self.fd, ctypes.byref(cvalue))
-        return cvalue.value
+        return os.eventfd_read(self.fd)
 
     def __handle_readable(self, fd: int, fut: asyncio.Future[int]) -> None:
         """Internal helper of aread."""
@@ -481,9 +479,7 @@ class EventFD:
         """Add the given value to the eventfd using eventfd_write."""
         if self.fd < 0:
             raise ValueError("attempt to read from closed eventfd")
-        if value < 0 or (value >> 64):
-            raise ValueError("value for eventfd_write out of range")
-        call_libc("eventfd_write", self.fd, ctypes.c_ulonglong(value))
+        os.eventfd_write(self.fd, value)
 
     def fileno(self) -> int:
         """Return the underlying file descriptor."""